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Intact Fibroblast Growth Factor 23 (FGF23), Serum
3003816
Copy Utility
Ordering Recommendation
May assist in the evaluation of inherited or acquired disorders of mineral metabolism such as hypophosphatemia rickets, tumor-induced osteomalacia, and familial tumoral calcinosis with hyperphosphatemia.
Mnemonic
IFGF23
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Varies
Reported
3-10 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Serum Separator Tube (SST). Also acceptable: Plain red.
Specimen Preparation
Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.25 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Storage/Transport Temperature
Frozen. Also acceptable: Refrigerated.
Unacceptable Conditions
Remarks
Stability
Ambient: Unacceptable; Refrigerated: 2 weeks; Frozen: 3 months
Reference Interval
By Report
Interpretive Data
Compliance Category
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
83520
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 3003817 | Intact Fibroblast Growth Factor 23 | 54390-0 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Autosomal Dominant Hypophosphatemic Rickets
- Familial Tumoral Calcinosis with Hyperphosphatemia
- FGF23
- Intact-FGF23
- Oncogenic Osteomalacia
- Phosphatonin
- X-linked Hypophosphatemia
Intact Fibroblast Growth Factor 23 (FGF23), Serum
Mayo Clinic Laboratories
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